Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| Challenger Braga - MP | 2021/09/23 09:00 | Hermans/Sijsling v Heller/Vanneste | 6-4,7-5 |
| Challenger Braga - MP | 2021/09/22 12:15 | Heller/Vanneste v Bortolotti/Pellegrino | 2-6,6-2,10-5 |
| Challenger Salzburg - MP | 2021/07/06 14:10 | Huesler/Miedler v Heller/Vanneste | 7-5,6-4 |
| ITF M15 Antalya - MP | 2021/05/06 11:55 | Eremin/Massara v Heller/Vanneste | 5-7,6-7 |
| ITF M15 Antalya - MP | 2021/05/04 11:00 | Arabaci/Saritas v Heller/Vanneste | 2-6,4-6 |
| ITF M15 Antalya - MP | 2021/04/27 13:25 | Heller/Vanneste v Ehrat/Martinez | 6-7,4-6 |
| ITF M25 Meerbusch - MP | 2021/04/16 15:10 | Durasovic/Eriksson v Heller/Vanneste | 1-6,7-5,10-8 |
| ITF M25 Meerbusch - MP | 2021/04/15 15:00 | Pichler/Wehnelt v Heller/Vanneste | 7-5,6-7,7-10 |